Description
Littelfuse FLSR series fuses have been the superior UL Class RK5 dual-element time-delay fuses, and are the most
widely used class of fuses. FLSR series fuses provide excellent protection for all types of circuits especially those
containing motors.
Also available in indicating version, see FLSR_ID series.

Features & Benefits
Excellent short-circuit protection - Improve safety through faster response to fault currents
Dual-element design - Provides advanced short circuit and overload protection
Current limiting - Restricts fault currents to provide a high degree of circuit protection.

Applications
• Service entrance switches
• Transformers
• Switchboard mains and feeders
• Motor control central mains and motor branch circuits
• All general purpose circuits

Specifications
Voltage Rating Ac: 600 V
Dc: 300 V
Interrupting Ratings Ac: 200 kA rms symmetrical; 300 kA rms symmetrical (Littelfuse self-certified)
Dc: 20 kA
Ampere Range 1⁄10 –600 A
Applicable Standards UL 248-12, Class RK5